Ubuntu Security Notice USN-1223-2

puppet regression

Summary

Software description

puppet
- Centralized configuration management

Details

USN-1223-1 fixed vulnerabilities in Puppet. A regression was found onUbuntu 10.04 LTS that caused permission denied errors when managing SSHauthorized_keys files with Puppet. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that Puppet unsafely opened files when the k5login type is used to manage files. A local attacker could exploit this to overwrite arbitrary files which could be used to escalate privileges. (CVE-2011-3869)

Ricky Zhou discovered that Puppet did not drop privileges when creating SSH authorized_keys files. A local attacker could exploit this to overwrite arbitrary files as root. (CVE-2011-3870)

It was discovered that Puppet used a predictable filename when using the --edit resource. A local attacker could exploit this to edit arbitrary files or run arbitrary code as the user invoking the program, typically root. (CVE-2011-3871)

Update instructions

The problem can be corrected by updating your system to the following
package version: